Paracypris ovidi Forel, 2020
publication ID |
https://doi.org/ 10.5852/ejt.2020.727.1183 |
publication LSID |
lsid:zoobank.org:pub:85AF63D9-5E9E-4CE0-AEC6-6F7CC8C4D375 |
DOI |
https://doi.org/10.5281/zenodo.4340742 |
persistent identifier |
https://treatment.plazi.org/id/7DB2FA3F-A4F7-451A-ACC2-5D3D6199CADD |
taxon LSID |
lsid:zoobank.org:act:7DB2FA3F-A4F7-451A-ACC2-5D3D6199CADD |
treatment provided by |
Plazi |
scientific name |
Paracypris ovidi Forel |
status |
sp. nov. |
Paracypris ovidi Forel View in CoL sp. nov.
urn:lsid:zoobank.org:act:7DB2FA3F-A4F7-451A-ACC2-5D3D6199CADD
Fig. 10 View Fig H–N
Diagnosis
A small ear-shaped species with conspicuous dorsal angulations and anterior maximum of curvature slightly below mid-height.
Etymology
In reference to the Latin poet Ovid (Publius Ovidius Naso) who died in exile on the Black Sea shore in Tomis, present-day Constanţa ( Romania).
Material examined
Holotype
ROMANIA • 1 complete carapace; Black Sea , Romanian Continental Shelf , borehole 817LV, sample CM31B; Rhaetian, Upper Triassic; MNHN.F. F63268 View Materials .
Paratypes
ROMANIA • 1 complete carapace; same collection data as for holotype; Rhaetian, Upper Triassic; MNHN.F. F63271 View Materials • 1 complete carapace; same collection data as for holotype; Rhaetian, Upper Triassic; MNHN.F. F63269 View Materials .
Other material
ROMANIA • 1 complete carapace; same collection data as for holotype; Rhaetian, Upper Triassic; MNHN.F. F63270 View Materials • 1 complete carapace; same collection data as for holotype; Rhaetian, Upper Triassic; MNHN.F. F63364 View Materials • 1 complete carapace; same locality as for preceding but sample CM31C; Rhaetian, Upper Triassic; MNHN.F. F63272 View Materials • 1 complete carapace; same locality as for preceding but sample CM31A; Rhaetian, Upper Triassic; MNHN.F. F63273 View Materials • 11 complete carapaces, 2 broken carapaces; same locality as for preceding but samples CM31A, CM31B and CM31C; Rhaetian, Upper Triassic; MNHN.F. F63358 View Materials .
Dimensions
See Fig. 3H View Fig .
Description
Carapace small, ear-shaped, tapered posteriorly in lateral view, with H max at antero-dorsal angulation, L max slightly below mid-H and W max at mid-L; LV overlaps RV very thinly along DB, PDB and VB; dorsal margin distinctly tripartite with conspicuous angulations, more uniformly arched in small specimens; ADB, DB and PDB straight, PDB sometimes slightly convex; ADB and DB of similar length (±80% of L max), respectively gently sloping to AB and antero-dorsal angulation; PB short (± 20% of L max), inclined posteriorly with an angle of 45–55°; AB relatively large, with largely rounded AVB and maximum of convexity located slightly below mid-H; PB narrowly rounded, with maximum of curvature slightly above ventral margin; surface smooth; inner structures not visible.
Occurrence
Romanian Continental Shelf, Black Sea, Rhaetian, Upper Triassic (this paper).
Remarks
Paracypris ovidi sp. nov. is closely related to Pseudomacrocypris ? kerabani sp. nov. described below, from which it differs by having dorsal angulations more acute and AB angulation located slightly higher. Paracypris ovidi sp. nov. also displays a normal overlap of LV around RV, which excludes it from Pseudomacrocypris and relates it to Paracypris . Paracypris ovidi sp. nov. also differs from the widespread Jurassic P. redcarensis ( Blake, 1876) (e.g., Harloff & Jäger 1994; Boomer et al. 1998; Ainsworth & Boomer 2001; Honigstein et al. 2014) in being less tapered posteriorly, with a less rounded anterior margin and a less pronounced overlap.
The H/L diagram shown in Fig. 3H View Fig documents the occurrence of several ontogenetic stages, the delimitation of which is complicated. The holotype ( Fig. 10H View Fig ) and one of the paratypes ( Fig. 10I View Fig ) are among the largest specimens recorded. The ontogenetic development of Paracypris ovidi sp. nov. mainly consists in size increase and accentuation of dorsal angulations.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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